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A309381 as a simple table

na(n)
17
231
337
467
573
6613
7991
81087
91117
102467
113301
123307
133607
144561
154987
164993
176367
186373
198263
208641
219643
2210903
2311827
2411953
2512373
2612547
2715187
2815901
2917047
3018043
3119603
3220353
3321751
3423671
3525147
3628837
3731033
3831231
3937957
4038707
4138917
4243201
4344383
4446021
4549627

[7,31,37,67,73,613,991,1087,1117,2467,3301,3307,
 3607,4561,4987,4993,6367,6373,8263,8641,9643,
 10903,11827,11953,12373,12547,15187,15901,17047,
 18043,19603,20353,21751,23671,25147,28837,31033,
 31231,37957,38707,38917,43201,44383,46021,49627]